United Kingdom
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Perranporth, United Kingdom

Sea temperature

In Perranporth, United Kingdom, the average seawater temperature in May is 12°C (53.6°F).
Note: Swimming in 12°C (53.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.


In May, the average length of the day in Perranporth is 15.5h.

How cold is the water in May in Perranporth?

In Perranporth, in May, the average water temperature is 12°C (53.6°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

How many hours of daylight does Perranporth have in May?

In May, the average length of the day in Perranporth, United Kingdom, is 15.5h.
Average sea temperature in May - Perranporth, United Kingdom
  • Average sea temperature in May: 12°C

The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).

Average daylight in May - Perranporth, United Kingdom
  • Average daylight in May: 15.5h

The month with the longest days is June (Average daylight: 16.3h).
The month with shortest days is December (Average daylight: 8.1h).